- Difficulty date
- May 14, 2021
- Submitted
- May 17, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 36578
- Aircraft time
- 39,186 hours, 11,492 cycles
- Engine
- Cfmint CFM567B273
- Engine time
- 39,185 hours, 11,492 cycles
- Part
- Pin
- Condition
- Damaged
- Location
- Rt Engine Vsv
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T.C. SB CFM56-7B-72-0986-1 FOUND 3RD STG VSV SLAB HEAD PIN LIBERATED @ 3 O'CLOCK POSITION ALF CAUSING DAMAGE TO BOOSTER SPOOL ALONG WITH DOWNSTREAM HPC BLADE DAMAGE. #2 POSN. ESN 805120. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE REF TC 78471000 AND 78471001. DEFECT TRANSFERRED TO SHOP W/O 1872757.